Improved sorghum-evaporator



E. W. SKINNER. Sorghum Evaperator.

Patented Oct. 10, I865.

UNITED STATES PATENT OEEicE.

E. W. SKINNER, OF MADISON, WISCONSIN, ASSIGNOR TO HIMSELF AND S. WILLEY, OF SAME PLACE.

IMPROVED SORGHUM-EVA'PORATOR.

Specification forming part of Letters Patent No. 50,424, dated October 10, 1865.

To all whom it may concern: boiling in the other parts of the compartment Be it known that LEW. SKINNER, of Madior division I). The openings d are at the cenk son, in the county of Dane and State of Wisters of the partitions a a,in order that the juice consin, have invented a new and Improved may be drawn from one compartment to the Sugar-Pan or Sorghum-Evaporator; and Ido other with less liability of the scum passing hereby declare that the followingis afulhclear, through than if the openings were near the and exact description thereof, which will ensides of the pan, for there is more heat at the able those skilled in the art to make and use center than at the sides of the pan, and the I the same,reference being had to the aecompaboiling at the former is more intense or rapid nyin g drawings, forming part of this specificathan at the latter, and has a tendency to throw V tion, in whichthe scum to the sides of the pan.

Figure 1 is a plan or top view of my inven- D D are cold-air duets which are placed tion 5 Fig. 2, a longitudinal vertical section of transversely under the pan in line with the par- 1 the same, taken in the line as 00, Fig. 1; Fig. 3, titions a a, said ducts extending through the L a transverse vertical section of the same, taken arch on which the pan is placed, and keeping in the line y Fig. 1. the bottom of the latter underneath the parti- Similar letters of reference indicate corretions in a cool state, and favoring the lodgespondiu g parts. ment of the scum by the side of said partitions The object of this invention is to obtain a in case it is not all taken off at 6. These coldsugar-pan or sorghum-evaporator which will air ducts also afford a protection to the parti meet all the requisites of the pretentious, extions from heat, so that wood may be used for pensive, and first-class articles now in use, and the partitions instead of metal. still combine theessential qualifications of sin E is an air-chamber underneath the complicity of construction, ease of working, durapartment or division I), said chamber having bility, cheapness of manufacture, and facility a damper, F, at its rear end. By means of of transportation, so as to be within the reach this chamber and damper the application of of all classes of sorghum cultivators. These the fire or heat to the compartment 1)" may he points, it is believed, are fully attained by my controlled as required, for when the damper invention. is closed nothing but hot air comes in contact The general form of my pan is straight, with with the bottom of the compartment 1)". ahorizontalbottom,A,flaring or inclined sides One of the most important things in the B B, and two transverse partitions, a a, which evaporation of sirup is to avoid the scorching dividethe pan into three compartments, 1) b", of the same when the operation is nearly comas shown in Figs. 1 and 2. In the first completed, and this is rendered certain by closing partment, b, of the pan there is a ledge or parthe damper at the proper time, and by adjusttition, c, which extends from one side B nearly ing the damper the entire heat of the furnace, across the pan, as shown clearly in Fig. 1,and or as much thereof as desired, may he obtained in each partition a a there is an opening, (1, at any time. which is closed, when necessary, by sliding The pan being made in one piece, with the gates 6, shown more particularly in Fig. 2. chamber E and damperFunder the finishing The ledge or partition 0 forms a recess or pas-- division, the pan may be set upon a plain arch, sage,O,throngh which the cold juice is admitthereby avoiding the labor necessary to set ted or passes into the first compartment or diseparate fines and dampers. The inside of the vision, I), of the pan in a gradual stream, and, pan is smooth, without ridges or creases to meeting the boiling juice at the mouth or outcatch the gummy matter deposited during the let (I, is forced by the boiling juice back along boiling operation. It is thereby easily cleaned the ledge to the opposite side of the pan at e, or scrubbed out when necessary. forming an eddy and causing a cool place By the use of wooden partitions the frame where there is no boiling, and where the scum can be securely bolted together and the pan will gather and can be readily removed by the built much cheaper than if metal partitions operator as it rises during the process of rapid were used.

finishing-division, b. When the uice is nearly reduced to the required consistency, the damper F is closed and the evaporating process comwhich is in turn supplied from the division I). I claim as new and desire to secure by Letters Patent 1. Theledge 0,extending from one side nearly to the other of a pan of the construction specified, so as to form a contracted channel, 0, for the introduction of thejuice, and an outlet, d, to bring it in sudden contact with the boiling sirup, all as herein explained, and for the purpose stated.

2. The com bination of the transverse cold-air ducts D D with the wooden partition a a, as and for the purpose specified.

he combination of the hot-air chamber E, damper F, cold-air d not D, and chamber 11, all arranged as described.

E. NV. SKINNER.

WVitnesses:

DAVID ATWOOD, A E. MAIN. 

